You'll be driving a boat and will have full control of the machine guns. You can also order Bowman and Woods to fire off their rocket launchers, though it takes them some time to reload.
The main targets you want to take out include enemy guard towers and vehicles. They not only include those on the land, but also heavily armed boats. Like your own body, the boat will recover health over time, so pull out of battle and allow time for repairs before engaging the next target.
Proceed down the hill and kill off even more generic dudes with cheesy rifles. Several of them will attempt to run right in your face, making them simple picks for close range attacks.
There are even enemy snipers placed in the roof. Gun them down with your iron sights or they may reprise with some murderous head shots of their own. Finally move into the crashed plane and steal a China Lake grenade launcher.
Your new gizmo will be useful for taking down enemy snipers that are far off in the trees. Also consider grabbing the sniper rifle to further hunt down the Soviet forces.