To utilize this strategy, you must be playing Star Wars: Battlefront on the map Hoth: Echo Base. First, select the Rebel Alliance and choose the Rebel Marksman. Spawn at the Hangar Command Post and climb into the nearest Snowspeeder.
Slowly fly over the nearest enemy AT-AT and jump out on top of it. You can now see almost the entire battlefield. From this position, sniping is very easy, as long as you remember not to fall off the AT-AT. Beware of enemy snipers, as some may try to shoot you off.