Ilya and Mira probably didn’t know and might have discovered it recently and raised it with the board, hence the promotion. Note: both have Eastern-European ties, so if the application is in Ukraine, they could have strong feelings about it. Greg co-signed or knew and didn’t tell.
Alternatively, Elon did, through Starlink and wanted to get revenge.
Alternatively, it could be a case where there was an option, Sam refused on ethical grounds without telling the board; they thought what is happening in Ukraine (or Gaza) justified the intervention. They confronted him and he lied.
Scroll down on the page, OpenAI is listed as a model provider, with logo and everything.
Or do you mean some kind of more 'direct' deal with military?