This achievement is most easily done on the defending team of a match on the offensive game mode, as there is no restriction to how far away from the HQ you must be to drop supplies. You can drive a supply truck in a circle dropping supplies and resupplyiing without having to waste time driving far enough away to drop them. Some lessons learned are to not do it at the artillery spawn as sometimes the enemy likes to camp your artillery and interrupt you. This is also a great opportunity to play as the engineer class and build your nodes. It takes roughly 6 minutes to place all 3 nodes, dismantle them and then place another 3. So depending on how well the enemy team does in capturing objectives and reseting the game time to 30 minutes you can drop a decent amount of supplies and build a decent amount of your nodes over several games to unlock all 4 achivements and be done with them.