The OSRD was indeed very narrowly set up , authorised only to spend on developing - but not actually making - weapons of war that could be realistically expected to see action during the actual war.
So how did life-saving - medicine - ever fit into this ?
No one has ever asked.
It was an era where medicalizing hate (see Hitler) was a commonplace ----and others were equally willing to use terms like "surgical strikes" in their military thinking.
But in our postmodern era of today , we are more unwilling than in the modern era to accept the use of the denial of medicine as a legitimate weapon of war.
Pre-modern ages agree with us postmoderns in this.
Dr Henry Dawson disagreed as well, during the war, and set up a massive world-history changing conflict in the process.....