diff --git a/ai.asm b/ai.asm
index c49e467..9c5be12 100644
--- a/ai.asm
+++ b/ai.asm
@@ -44,6 +44,7 @@ loop
 
     ; common values used in AI routines
     ; address of weapons table (for future use)
+WepTableToTemp
     lda TanksWeaponsTableL,x
     sta temp
     lda TanksWeaponsTableH,x
@@ -210,6 +211,19 @@ AngleTable	; 16 bytes ;ba w $348b L$3350
 .endp
 ;----------------------------------------------
 .proc UseBatteryOrFlag
+	jsr UseBattery	; as subroutine for reuse in AutoDefense
+	; if very low energy and no battery then use White Flag
+	lda Energy,x
+	cmp #5
+	bcs EnoughEnergy
+	; lower than 5 units - white flag
+	lda #ind_White_Flag_____
+	sta ActiveDefenceWeapon,x
+EnoughEnergy
+	rts
+.endp
+;
+.proc UseBattery
 	; if low energy ten use battery
 	lda Energy,x
 	cmp #30
@@ -219,20 +233,13 @@ AngleTable	; 16 bytes ;ba w $348b L$3350
 	lda (temp),y  ; has address of TanksWeaponsTable
 	beq NoBatteries
 	; we have batteries - use one
-	clc
+	sec
 	sbc #1
 	sta (temp),y
 	lda #99
 	sta Energy,x
-NoBatteries
-	; if very low energy and no battery then use White Flag
-	lda Energy,x
-	cmp #5
-	bcs EnoughEnergy
-	; lower than 5 units - white flag
-	lda #ind_White_Flag_____
-	sta ActiveDefenceWeapon,x
 EnoughEnergy
+NoBatteries
 	rts
 .endp
 ;----------------------------------------------
@@ -245,7 +252,7 @@ EnoughEnergy
 	; first check check if any is in use
 	lda ActiveDefenceWeapon,x
 	bne DefensiveInUse
-	ldy #last_defensive_____+1 ;the last defensive weapon
+	ldy #last_real_defensive+1 ;the last defensive weapon
 @
 	dey
 	cpy #ind_Battery________ ;first defensive weapon	(White Flag and Battery - never use)
@@ -253,7 +260,7 @@ EnoughEnergy
 	lda (temp),y  ; has address of TanksWeaponsTable
 	beq @- 
 	; decrease in inventory
-	clc
+	sec
 	sbc #1
 	sta (temp),y  ; has address of TanksWeaponsTable
 	; activate defensive weapon
@@ -280,7 +287,7 @@ DefensiveInUse
 	; first check check if any is in use
 	lda ActiveDefenceWeapon,x
 	bne DefensiveInUse
-	ldy #last_defensive_____+1 ;the last defensive weapon	
+	ldy #last_real_defensive+1 ;the last defensive weapon	
 @
 	dey
 	cpy #ind_Battery________ ;first defensive weapon	(White Flag and Battery - never use)
@@ -288,7 +295,7 @@ DefensiveInUse
 	lda (temp),y  ; has address of TanksWeaponsTable
 	beq @- 
 	; decrease in inventory
-	clc
+	sec
 	sbc #1
 	sta (temp),y  ; has address of TanksWeaponsTable
 	; activate defensive weapon
@@ -575,7 +582,7 @@ skipThisPlayer
 	asl 
 	tay
 	; force correction - lower tank Y position - higher possible force
-	clc
+	sec
 	lda #screenheight
 	sbc Ytankstable,x
 	sta temp2
diff --git a/constants.asm b/constants.asm
index cbe9515..33d3fec 100644
--- a/constants.asm
+++ b/constants.asm
@@ -276,6 +276,7 @@ WeaponPriceH ; weapons prices (tables with prices of weapons)
   .by >price_Nuclear_Winter_
   .by >price_Lazy_Boy_______
   .by >price_Lazy_Darwin____
+  .by >price_Auto_Defense___
 WeaponPriceL
   .by <price_Baby_Missile___
   .by <price_Missile________
@@ -323,6 +324,7 @@ WeaponPriceL
   .by <price_Nuclear_Winter_
   .by <price_Lazy_Boy_______
   .by <price_Lazy_Darwin____
+  .by <price_Auto_Defense___
 
 ;-------------------------------------------------
 ; how many units (bulletd) of a given weapon we get for a given price
@@ -377,6 +379,7 @@ WeaponUnits
   .by 1  ;Nuclear_Winter_;_43
   .by 2	 ;Lazy_Boy_______;_44
   .by 2  ;Lazy_Darwin____;_45
+  .by 2  ;Auto_Defense___;_46
 
 PurchaseMeTable ;weapons good to be purchased by the robot 
                 ;the comment is an index in the tables
@@ -396,7 +399,7 @@ PurchaseMeTable ;weapons good to be purchased by the robot
     ; "Strong Parachute","Mag Deflector   ","Shield          ","Heavy Shield    "
     .by %01011111
 	; "Force Shield    ","Bouncy Castle   ","Long Barrel     ","Nuclear Winter  "
-	; "Lazy Boy        ","Lazy Darwin     "
+	; "Lazy Boy        ","Lazy Darwin     ","Auto Defense    "
 	.by %11000000
 
 PurchaseMeTable2 ;weapons good to be purchased by the robot (Cyborg)
@@ -417,7 +420,7 @@ PurchaseMeTable2 ;weapons good to be purchased by the robot (Cyborg)
     ; "Strong Parachute","Mag Deflector   ","Shield          ","Heavy Shield    "
     .by %01001101
     ; "Force Shield    ","Bouncy Castle   ","Long Barrel     ","Nuclear Winter  "
-	; "Lazy Boy        ","Lazy Darwin     "
+	; "Lazy Boy        ","Lazy Darwin     ","Auto Defense    "
     .by %11000000
 
 ;-------------------------------------------------
@@ -469,6 +472,7 @@ WeaponSymbols
     .by $7d ;ind_Nuclear_Winter_ ;_43
 	.by $02 ;ind_Lazy_Boy_______ ;_44
 	.by $03 ;ind_Lazy_Darwin____ ;_45
+	.by $5e ;ind_Auto_Defense___ ;_46
 
 ; Names of weapons (16 chars long)
 NamesOfWeapons ;the comment is an index in the tables
@@ -519,6 +523,7 @@ NamesOfWeapons ;the comment is an index in the tables
     dta d"Nuclear Winter  " ; 43
 	dta d"Lazy Boy        " ; 44
 	dta d"Lazy Darwin     " ; 45
+	dta d"Auto Defense    " ; 46
 
 DefensiveEnergy = *-(last_offensive_____ - first_offensive____ +1)  ; to fake the table for ALL weapons
 	.by 00	; White Flag
@@ -535,6 +540,7 @@ DefensiveEnergy = *-(last_offensive_____ - first_offensive____ +1)  ; to fake th
 	.by 00	; Nuclear Winter
 	.by 00  ; Lazy Boy
 	.by 00  ; Lazy Darwin
+	.by 00  ; Auto Defense
 weaponsOfDeath  ; weapons used in tank death animations
 	dta 1,2,3,7,17,18,19,20,21,22,23,24,25,26,27
 weaponsOfDeathEnd
diff --git a/definitions.asm b/definitions.asm
index 3b49b74..02d2341 100644
--- a/definitions.asm
+++ b/definitions.asm
@@ -86,6 +86,7 @@ price_Long_Barrel____ = 2100  ;_42
 price_Nuclear_Winter_ = 1000  ;_43
 price_Lazy_Boy_______ =  500  ;_44
 price_Lazy_Darwin____ =  500  ;_45
+price_Auto_Defense___ =  150  ;_46
 ;Weapon indexes (numbers)
 ind_Baby_Missile___ = 0
 first_offensive____ = ind_Baby_Missile___
@@ -136,7 +137,9 @@ ind_Long_Barrel____ = 42
 ind_Nuclear_Winter_ = 43
 ind_Lazy_Boy_______ = 44
 ind_Lazy_Darwin____ = 45
-last_defensive_____ = ind_Lazy_Darwin____
+ind_Auto_Defense___ = 46
+last_defensive_____ = ind_Auto_Defense___
+last_real_defensive = ind_Bouncy_Castle__
 number_of_offensives = last_offensive_____ - first_offensive____+1
 number_of_defensives = (last_defensive_____ - first_defensive____+1)
 ;--------------------------------
diff --git a/scorch.asm b/scorch.asm
index 87fc999..9901c11 100644
--- a/scorch.asm
+++ b/scorch.asm
@@ -324,6 +324,7 @@ MainGameLoop
 	jsr SetWallsType
 	; first set default barrel lengths (fix for Long Schlong activation :) )
 	; we must do it before purchase/activate
+	; and set Auto Defense to off
     jsr SetStandardBarrels
 
 	jsr CallPurchaseForEveryTank
@@ -612,6 +613,19 @@ DoNotFinishTheRound
     jmp Seppuku
 
 @
+	; Auto Defense - activates defensives
+    ldx NumberOfPlayers
+    dex
+CheckNextTankAD
+    lda Energy,x
+    beq @+
+	lda AutoDefenseFlag,x
+	beq @+
+	; run auto defense for tank in X
+	jsr AutoDefense
+@   dex
+    bpl CheckNextTankAD
+;
     ldx TankSequencePointer
     lda TankSequence,x
     sta TankNr
@@ -1129,8 +1143,10 @@ MakeTanksVisible
 ;--------------------------------------------------
 .proc SetStandardBarrels
     ldx #maxPlayers-1
-	lda #StandardBarrel	; standard barrel length
-@	sta BarrelLength,x
+@	lda #StandardBarrel	; standard barrel length
+	sta BarrelLength,x
+	lda #$00	; deactivate Auto Defense
+	sta AutoDefenseFlag,x
 	dex
 	bpl @-
 	rts
diff --git a/scorch.bin b/scorch.bin
index 92f7f06..343f898 100644
Binary files a/scorch.bin and b/scorch.bin differ
diff --git a/scorch.xex b/scorch.xex
index 113a4fb..74127bd 100644
Binary files a/scorch.xex and b/scorch.xex differ
diff --git a/textproc.asm b/textproc.asm
index 53a4661..7478591 100644
--- a/textproc.asm
+++ b/textproc.asm
@@ -848,6 +848,13 @@ invSelectDef
 	ply
     jmp DecreaseDefensive ; bypass activation
 NotBattery
+	cmp #ind_Auto_Defense___
+	bne NoAutoDefense
+    ; Auto Defense - do it like battery
+    mva #sfx_battery sfx_effect
+    mva #$A1 AutoDefenseFlag,x	; this is "A" in inverse - for status line :)
+    jmp DecreaseDefensive ; bypass activation
+NoAutoDefense
 	cmp #ind_Lazy_Boy_______
 	bne NoLazyBoy
 	; Lazy Boy - do it like battery
@@ -2343,6 +2350,8 @@ EndOfCredits
     ;---------------------
     ;displaying name of the defence weapon (if active)
     ;---------------------
+	lda AutoDefenseFlag,x	; Auto Defense symbol (space or "A" in inverse)
+	sta statusBuffer+80+21
     lda #$08 ; (
     sta statusBuffer+80+22
     lda #$09    ; )
diff --git a/variables.asm b/variables.asm
index 9098334..019b144 100644
--- a/variables.asm
+++ b/variables.asm
@@ -126,7 +126,9 @@ BarrelLength ;length of the tank barrel - dont forget to set it to 6 at round st
 ActiveWeapon ;number of the selected weapon
     .DS MaxPlayers
 ActiveDefenceWeapon ;number of the activated defence weapon - 0 
-    .DS MaxPlayers	
+    .DS MaxPlayers
+AutoDefenseFlag ; 0 - not activated, >$7f - activated 
+    .DS MaxPlayers
 WeaponDepleted .DS 1  ; if 0 deactivate the weapon and switch to Baby Missile
 ;----------------------------------------------------
 
diff --git a/weapons.asm b/weapons.asm
index 8e12e4c..8130d48 100644
--- a/weapons.asm
+++ b/weapons.asm
@@ -2418,7 +2418,17 @@ InverseScreenByte
 	sta (temp),y
 	rts
 .endp
-
+; -------------------------------------------------
+.proc AutoDefense
+; -------------------------------------------------
+; This routine is run from inside of the main loop
+; X - index of  tank
+; -------------------------------------------------
+	jsr PrepareAIShoot.WepTableToTemp
+	jsr UseBattery
+	jsr TosserDefensives
+	rts
+.endp
 ; -------------------------------------------------
 .proc TankFlying
 ; -------------------------------------------------