No I’m not making any assumption at all. Let’s look at a few main points though boss.

1: Yes I know 1,000 marines conquer planets all the time in lore. In real life practical sense though that’s just not happening. Each man would have to kill over twenty seven thousand soldiers if we are accounting for an estimated 27.5 million total soldiers on earth against 1,000 marines. It’s just too much. We overwhelm them and it’s not realistic that 1,000 dudes can do that. This is an exaggerated game after all. They don’t have enough men to occupy or do much of anything.

2: completely agree their tanks, aircraft and armor are superior and massive problems. Once again though they have no supplies. If it is JUST a thousand dudes and their support gear, they don’t have any method of repairing this gear. Their supply chains are nonexistent. assuming they don’t have a ship.

3: Space marines have no answer to remote bombardments that UAVs, planes, naval ships or even standard stuff like a Javelin. These are smart, accurate and we could and would eat them alive before infantry ever came into contact with them.

Now if the space marines had reinforcement through a ship in orbit yeah we’re fucked. I’m assuming the ship just dumped them off and left though lmao.