I am not sure how many are aware that Goering, head of the Luftwaffe in WW2 was known to have worked his model railway whilst his bomber crews and fighters were out on the job. Apparently this did cause some angst on the German side as while "the boss" was nicely enjoying himself, his men were putting their lives on the line.
I understand another senior German WW2 air force, General Adolph Galland, also had model trains.
Not to be outdone, one of "Bomber" Harris's (Chief of RAF Bomber Command) deputies, Air Vice Marshal Saundby, worked O gauge model trains.
Perhaps the outcome of the war might have been different if these three had gotten together for a running night....