McMaster made his name in Desert Storm. Being in the military doesn’t make you a conservative. Norman Schwarzkopf admitted in his autobiography that he was a pretty big liberal on many issues.
Military and combat service may not make one a conservative, but I think it would indicate the person to be a patriot. And havi g been exposed to all things Donald Trump for 30+ years I can say that Pres. Trump is many things, a Free Republic consrrvative is not necessarily one of them.