1) move a barrel eg. from a tank to inventory from solier -> open inventary from soldier (key "i") -> doubleklick to barrel -> now soldier should have barrel in hands -> move mouse from selected soldier over a vehicle -> mousecursor will be changed -> barrel will be refueled -> move mouse over refueling vehicle...
2) all red coloured destroyed parts from vehicles (screen on lower-left) are repairable. y can repair 2 destroyed parts on 1 vehicle same time. but y need 2 repairkids.
3) yes
4) no

pics to 2)
http://www.abload.de/img/5transingamev0zi.jpg

you're the best, thanks.
1) Would tanks have those barrel by default or i have to look for them?
2) Wired, i tried repairing enemy vehicle with the repair kit i have but soldier refuse to do it! could be damaged beyond repairs! i will have to check that again.
New! 3) When a soldier used heavy machine gun in prone position his aiming was all over the place, is there away to make his aiming more accurate!

Is Red Tide have all above details? or it's a different game!

1) yes - in multiplayer every vehicle have a barrel in inventary. in singleplayer its different.
2) singleplayer is different to multiplayer. possible that y repaired vehicle is locked for captureing. all units marked as yellow triangle in minimap are captureable -> repairable. (gray marked parts -> lower left pics -> arent repairable ... never saw grey marked parts in multiplayer -> only in singleplayer)
3) use direct controll and fire with small bursts. longer bursts -> smaller accurate -> bigger spreadradius

Red Tide is a standalone game. Red Tide include only singleplayermissions. multiplayer isnt avaiable in Red Tide.
---> official Red Tide Homepage <---