Original sentence: It consisted of the 4th and 516th Signal Groups and 102nd Signal Battalion supporting Army Group, Central Europe; North Atlantic Treaty Organization; USAREUR; and other elements in Europe as directed.Seventh Army.The 7th Signal Brigade comprises the 44th and 72d Signal Battalions.The Hitler-era Reichspost 40 Strowger switches were replaced by KN-101 electronic switching systems manufactured by Siemens
Edited sentence: It consisted of the 4th and 516th Signal Groups and 102nd Signal Battalion supporting Army Group, Central Europe; NATO; USAREUR; and other elements in Europe as directed.Seventh United States Army.The 7th Signal Brigade comprises the 44th and 72nd Signal Battalions.The Hitler-era  40 Strowger switches were replaced by KN-101 electronic switching systems manufactured by Siemens