Frances Langford, the 1930s and 1940s singer known for her warmth and rich voice who traveled widely with Bob Hope entertaining troops in World War II, died Monday at her home in Jensen Beach, Fla. She was 92.

Langford dropped out of Hollywood in the mid-1950s but kept performing for many years at the Outrigger, a restaurant she had owned for many years.

Langford’s biggest hit was “I’m in the Mood for Love.” She first performed the song in “Every Night at Eight,” a 1935 musical-comedy film also starring Alice Faye about three singers seeking fame with a bandleader (George Raft). The Dorothy Fields-Jimmy McHugh song, which she later also sung in the 1936 film “Palm Springs,” became Langford’s signature song.

Langford also appeared in a number of other movies, including “Born to Dance,” “Hollywood Hotel,” “Yankee Doodle Dandy,” and “This Is the Army.” Her last film role was in 1954, when she appeared as herself in “The Glenn Miller Story.”

Langford also could be heard for many years on the radio, including several seasons during the late 1940s and early 1950s in the role of Blanche Bickerson to Don Ameche’s John Bickerson on the comedy show “The Bickersons,” about a relentlessly squabbling couple.

Yet it was her role as an entertainer for GIs abroad as well as for those who returned home injured that earned her a lasting reputation as a star whose patriotism and compassion exceeded her desire to burnish her own image. Besides World War II, Langford entertained troops during the Korean conflict and the Vietnam War.

She regarded her wartime experiences as “the greatest thing in my life.”

“I’d sing a song, and I could just see the guys getting this faraway expression,” she told the Palm Beach (Fla.) Post in 2000. “I knew they were going home in their minds.”

And it never failed that when she sang “I’m in the Mood for Love,” some GI would stand up and say, “You’ve come to the right place, sister!”

“She knows just how much sex to pour and still be dignified,” Hope once said of the singer.

During World War II, Langford and Hope shared many adventures in their travels with their troupe of performers. One night, she told a Florida newspaper in 2003, the two of them had to jump out of Jeep to avoid fire from a German fighter plane. Both of them landed, Hope first, in a culvert.

She said Hope screamed, “Oh, my God, I’m hit!” But it was just Langford landing on top of him.

Another time she, Hope, and others spent the night in the basement of a hotel in Algiers as bombs burst overhead and Hope cracked jokes.

In all, she visited bases in England, Africa, Sicily, the Caribbean, and the Pacific, earning the nickname “sweetheart of the fighting fronts.”

She continued her commitment to servicemen when she returned to the United States. In 1944-45, she wrote a diary for the New York Journal-American about her experiences visiting servicemen who had been wounded in World War II. Her “Purple Heart Diary” included passages like this, written after a visit to Oak Knoll Naval Hospital in Oakland, Calif.:

“As I sang, I felt a surging response from these men like I’ve never before received from an audience. I could hardly hit the high notes, there was such a lump in my throat. Their emotions fairly rolled and broke across the ward …

“I suddenly thought what a terrible thing it would have been if I hadn’t shown up. I ran to the little washroom the nurses use. There I had myself a good cry.”

A favorite song of the wounded soldiers was “Embraceable You.”

“I shall always feel a kindly Providence led me to its choice,” she wrote. Once, singing it to a GI who was “practically dead,” the soldier “began smiling.” It was the favorite song of his sweetheart back home.

In 1952, Langford and her then-husband, matinee idol Jon Hall, and a troupe of entertainers spent six weeks in Korea performing for GIs there. In 1966, she also joined others who entertained troops in Vietnam for several weeks.

Frances Newbern Langford was born April 4, 1913, in Lakeland, Fla. Her father was in construction and her mother was a concert pianist who was quick to recognize her daughter’s singing talent.

But Langford’s voice changed from operatic to throaty when she underwent a tonsil operation in her teens, and Langford thought her career was over. Her mother, however, believed that Frances’s new voice was even more appealing.

Langford began in vaudeville and by her late teens was on the radio in Tampa, Fla., where Rudy Vallee heard her and gave her a guest spot on his show.

After playing a small role in “Here Goes the Bride,” which ran for seven performances on Broadway in 1931, Langford was heard on a number of radio shows, including “Colgate House Party,” until getting a prominent role in “Every Night at Eight.”

During the late 1930s and 1940s, she appeared on radio in “American Cruise” with Dick Powell, Bob Hope’s radio show, the Chase & Sanborn show with Spike Jones and, in the late 1940s, “The Bickersons.”

The latter was a surprise direction for Langford, who played the loudmouthed battle-ax Blanche Bickerson who got into frequent, rapid-fire disputes with her husband, John (Ameche). The show, written by Phil Rapp, developed from a comedy skit on “The Charlie McCarthy Show.”

Critic Leonard Maltin, writing in “Great American Broadcast: A Celebration of Radio’s Golden Age” (1997) about Langford’s performance as Blanche, said, “She was quite simply sensational.” “The Bickersons” entered the American lexicon to refer to any couple that constantly squabbled over nothing.

After divorcing Hall in 1953, she married Ralph Evinrude, of the outboardmotor Evinrudes. He died in 1986.

In 1994, Langford married Harold Stuart, former assistant secretary of the Air Force under President Truman. Mr. Stuart survives her.