[adm]

I would go with artillery for the big flak barrages that were used in WW II, particularly against night bombing. The guns were laid, and fired under a central radar controlled direction system. Starting at large DDs, big military ships used similar systems. Smaller point defense guns would use gunner. Early war AAA guns, single gun emplacements, and some of the more remote locations would also tend to use gunner skill for the entire war.