Patch April 2015b for GamersGate version.

Here: http://graviteam.com/SABOW/sabow_apr15b_patch_eng.gt2extension
Or on GamersGate in your Library.
14) - 32) are new this patch

1) Modified and redesigned missions from "Instant Action" mode, added training elements.
2) Added the mission driving T-62 tank.
3) Changed sounds for MGs fire for M60 tank.
4) Direction indicators for gun and hull moved to the back of the indicator area.
5) Added a smoke generators for M60A1 and T-62 tanks on the driver's seat and the corresponding command to the commander.
6) Ability to turn on smoke generation for M60A1, T-62 and T-55 tanks for few minutes in the tactical interface.
7) Added automatic alignment of the commander's turret on M60 tank during the transition to the stowed position.
8 ) Ability to use the variable thickness for sight reticles depending on the zoom.
9) Changed a view system for M60 tank commander, added additional poses in the cockpit.
10) The display of the "ceasefire" query in the combat interface.
11) Slightly optimized visualization for smoke and dust.
12) Added new commands in combat interface.
13) Changes in User Guide.
14) Added the [Delete] button to cancel the selected target from the commander.
15) Added setting the priority target by clicking [LMB]/[MMB] in the center of sight (binoculars) for the commander and gunner.
16) Changed some icons in the combat interface.
17) Added clickable area for the M60 tank commander for switching to the main turret controlling mode.
18) Added hotkey [\|] to activate the menu of crew commands.
19) Different effects on detonation of ammunition and ignition of the fuel/charges.
20) Ability to close the hatch on the current seat (button [P]).
21) Added highlighting the center of the view, to set targets without cursor mode.
22) Display for enabled smoke generator.
23) Added an order for the commander and gunner to switch to active defense mode (hold [ 0]).
24) Added an order for the commander and gunner to switch to active defense with respect to the priority targets (hold [9] ).
25) Added a command [ U] to set/change the point on the route of active defense.
26) Added a command [K] to turn the tank/formation directly on the priority target.
27) Added the single missions menu.
28) Hatches with attached preiscopes are automatically closed when crewmember get inside the tank.
29) Fixed a bug with a closed wedge at the first loading of the projectile.
30) Fixed bugs related to the dynamic time deceleration and decreased rate of fire for the machine guns in the simulator mode.
31) Added a single mission explains the principle of a smoke shield order.
32) Added a single mission explains the use of active defense mode.

Nice additions.