His knowledge and abilities are very much in demand, since this world does not yet have heavier-than-air flight, and its possession could decide the war. However, without military assistance from any United States equivalent, the war is going badly for the anti-Perkunishan allies.
His abilities are highly prized, as this world lacks advanced aviation capabilities, and controlling them could influence the outcome of the conflict. Conversely, without external military support, the opposing forces are experiencing difficulties.