Wikipedia: Army Mcarthy hearings 1954

The Army–McCarthy hearings were a series of hearings held by the United States Senate‘s Subcommittee on Investigations (April–June 1954) to investigate conflicting accusations between the United States Army and U.S. Senator Joseph McCarthy. The Army accused Chief Committee Counsel Roy Cohn of pressuring the Army to give preferential treatment to G. David Schine, a former McCarthy aide and friend of Cohn’s. McCarthy counter-charged that this accusation was made in bad faith and in retaliation for his recent aggressive investigations of suspected Communists and security risks in the Army.

Army–McCarthy hearings
Joseph McCarthy (left) chats with Roy Cohn at the hearings
Event	Senate hearing derived from Senator Joseph McCarthy’s hunt for communists in US
Time	April–June, 1954
Place	Washington DC,
Participants	The two sides of the hearing: US Army (accusing their opponents of blackmail) Joseph McCarthy, Roy Cohn and G. David Schine (accusing the Army of communism)
Chairman	Senator Karl Mundt
Result	End of the McCarthy era

Chaired by Senator Karl Mundt, the hearings convened on March 16, 1954, and received considerable press attention, including gavel-to-gavel live television coverage on ABCand DuMont (April 22–June 17). The media coverage, particularly television, greatly contributed to McCarthy’s decline in popularity and his eventual censure by the Senate the following December.