I agree that the song is about war but I think there is more to it than that. When wars develop we instinctively divide ourselves up. In a war there are only two sides: Us and Them. This song explains how stupid war is by showing how it separates us. By using generic terms, US and THEM, Floyd makes the song timeless. No matter what, there will always be wars or conflicts or disputes where we divide ourselves. There is also a sense of facelessness implied by using Us and Them as the terms. Us can be anyone and They could be anyone. I think the ambiguous nature of the lyrics is an important factor in the song's meaning.
I agree that the song is about war but I think there is more to it than that. When wars develop we instinctively divide ourselves up. In a war there are only two sides: Us and Them. This song explains how stupid war is by showing how it separates us. By using generic terms, US and THEM, Floyd makes the song timeless. No matter what, there will always be wars or conflicts or disputes where we divide ourselves. There is also a sense of facelessness implied by using Us and Them as the terms. Us can be anyone and They could be anyone. I think the ambiguous nature of the lyrics is an important factor in the song's meaning.