Frank McHugh was perhaps the epitome of a reliable supporting player. You know this guy — you might not know his name, but you know his face.

As a Warner Brothers contract player in the ‘30s and ‘40s, no one backstopped stars like Bing Crosby, William Powell, and James Cagney better than McHugh. He was an expert at sheepish expressions, jittery laughs, and screwball action, usually serving as comic relief and providing larcenous or romantic complications when required.

McHugh was born into a stage family on May 23, 1898, and appeared in vaudeville with his siblings Matt and Kitty by the age of 10. Drawn from his stage career by the arrival of talkies, he arrived in Hollywood in 1930, signed with Warner Brothers almost immediately, and appeared in nearly 90 films in his first 10 years with the studio.

He was also known as a central member of the Irish Mafia, the tight-knit group of Irish-American actors that included Cagney, Pat O’Brien, Spencer Tracy, Allen Jenkins, Frank Morgan, and Ralph Bellamy. They preferred to be known as the “Boys’ Club,” and Morgan and Bellamy were actually of German and English/French descent respectively, but these real-life ties translated well onscreen. McHugh and Cagney, for instance, appeared together in 12 pictures; McHugh and O’Brien in 11.

Frank McHugh and James Cagney bottle a little fun in THE ROARING TWENTIES (1939).

What you may not know about McHugh is the valuable real-life part he played during World War II.

Like many in Hollywood, he enthusiastically supported the war effort, joining the Hollywood Victory Caravan in May 1942. This show traveled the United States, featuring performances by the biggest stars, with the ticket proceeds going the Army and Navy Relief Fund.

The star-studded Hollywood Victory Caravan at a stop in Minnesota

Mark Sandrich, director of the Fred Astaire-Ginger Rogers films, and Alfred Newman, Twentieth Century Fox’s musical director, organized the Caravan as a musical revue. It featured, at various times, Crosby, Cagney, O’Brien, Cary Grant, Charles Boyer, Claudette Colbert, Charles Coburn, Joan Blondell, Joan Bennett, Eleanor Powell, Desi Arnaz, Bert Lahr, and Groucho Marx, along with McHugh (leaning forward in the top row above). In August and September of the same year, he went to England with a USO tour, the American Variety Show.

After those tours, McHugh continued his war efforts, producing his own show and taking it to the troops in Europe two years later. In November and December 1944, just in time for the Battle of the Bulge, “McHugh’s Revue” toured the front lines in Belgium, France, Holland, and Germany.

McHugh loved meeting and chatting with the servicemen, and the feeling was mutual. He received a citation from the Army, in which General Raymond S. McLain referred to the Revue as “an oasis in this desert of hardship and suffering….Your show was sparkling, and left a refreshing atmosphere in the spirit of many battle weary soldiers.” This certainly was McHugh’s most important, and possibly most loved, supporting role.

Many materials related to McHugh’s wartime activities, including his own account of McHugh’s Revue, are preserved in the Frank McHugh Papers at the New York Public Library, which I hope to see someday.

This post is part of the 2013 What A Character! blogathon, co-hosted by myself, Kellee of Outspoken and Freckled, and Aurora of Once Upon A Screen. Be sure and check out all the Saturday posts.