Why do Muslims join kuffar armies?

[Dr.LuLworth]

@cricketplaya

I always wanted to know what in the world makes Muslims join worthless causes such as joining the forces of the kuffar? Would you join? Why? Do you have muslim friends/family in the forces? be it canadian, uk, american, german, french…

Do you have any feelings for those who lose their lives fighting on the side of kuffar? Yes/No? Why?

Muslims pay tribute to UK's armed forces. - BBC News
A group of Muslim women have laid a wreath at the National Memorial Arboretum in honour of those who died fighting for the UK.

i suppose the same reason you speak in kuffars language.