Buckle up and strap in, because this is going to be quite the grind. Forget about even attempting to do this legitimately as only one Jeep can spawn in at a time, every 5 minutes. This needs to be done 50 times, which means that under optimal boosting conditions it's going to take you 4 hours and 10 minutes AT THE MINIMUM PER PERSON.
So, let's get into the best, fastest and most optimal way to grind this out. This is what you're going to need:
You'll need 2 people, one spawning the Jeep, the other destroying it. The person spawning the Jeep needs to be a Commander, of which there can only be one per side. The person destroying them will need to spawn in as a tank commander and get a tank, or spawn as a machine gunner.
Find a time that works best for you and try to line it up with servers that are dead, switching regions in a good tactic. While you can't manually switch regions, joining someone else's game in another region will do the trick. So, it's probably best to have each person be from a different region, but it's not necessary.
Once you're all set, both people start searching for games, Warfare is the best game mode as it'll let you go all the way to each other's HQ. Try to find a server that's dead, if possible, but don't pass up a game if the commander slot is open. If you end up in a full server, have the other person join your game. They'll need to switch sides though, but all they'll need to do is find a player on the opposite and join their game. This will switch you over to the other side.
If you're in an empty server or can't find an open slot for a machine gunner, you'll need to be a tank commander and jump in a tank. If in a game of Warfare, the person destroying the Jeep will need to go to 1 of 3 of the Commanders HQs. Choose the HQ that will be furthest from the action or nearest sector. Communicate where people are on the map so you can avoid dying and quickly navigate to the HQ.
The Commander should spawn a Jeep as soon as they're able to. It's cost Fuel to do so, make sure you keep enough in reserve. The Commander can spawn in a Jeep by pressing
, this will bring up a map, with Commander abilities on the right. Scroll down to the Jeep, which will tell you it's cost and time left until you can spawn one in. Once it's ready, make sure you spawn it at the HQ you'll be meeting up at.
If you can't spawn it in but have enough Fuel, it's because there're too many vehicles there, move it and you're good.
You're all set at that point, just make sure the other person hides or watches out for other players trying to kill the person destroying the Jeep. Do this for the entire match and both of you try to snag Commander. Decide from there on who goes next.
If you're in a game of Offensive, it's going to require a lot more work. You're not going to be able to each other's HQ. The team on offensive can go further than the defenders, who can't cross into enemy territory. If you do a kill timer will activate.
It's still mostly the same setup as choosing a tanker or machine gunner. You'll just both need to meet up on the map. Meet up in places that will see the less traffic and move accordingly as sectors are taken.
That's about it. The only thing you'll want to take into consideration is that if you're in an active game, the Commander should try to help his team or give them what they request, or else they start teamkilling the Commander. Keep enough Fuel in reserve so you can spawn the Jeep whenever the timer is up.
While you're doing that you may as well try and go for a couple other achievements, some of which you should get naturally while boosting:
Spawn a half track, move it to the Jeep spawn. Die as much as possible and spawn in. Hold off when the Jeep is going to spawn soon as it can take up to 60 seconds to respawn.
Should happen if the map goes on long enough, and can be hastened by the Commander being killed much as possible in between Jeep spawns.
You can try to drop ammo with the Jeep with RB, but prioritize Jeep kills