That's another connection to WWII, though: raw recruits thrown in to deal with machinery was a valid way to operate a tank army or an air force. It just meant that machines broke down faster, could not be repaired and re-fielded after taking battle damage, and generally needed to be replaced by freshly produced examples at an increased pace that put demands on the industries and resulted in a further drop in quality. Keeping up quantity was still considered a viable strategy...
One wonders about the nature of the Dominion War battles. We saw examples of total destruction where repairs or maintenance would not have played a role, but we also saw the aftermath of the 7th Fleet disaster at Tyra, with several crippled ships in need of expert care for their very possible return to the front lines.
We also saw those casualty lists on the DS9 War Room wall - always listing just a tiny handful of names under each starship name, and suggesting that typical combat engagements resulted in people getting killed but not in ships being destroyed outright. Attrition of expertise would become a major issue in that sort of warfare, then... But OTOH there would be an environment where new personnel got a non-fatal baptism of fire and grew up to be veterans, probably quite quickly at that.
Timo Saloniemi