Since World War II, the U.S. government has announced the expulsions of about 75 Soviets stationed in this country. About 25 others were expelled with no announcement, according to the State Department.

In the last five years, 11 Soviets have been expelled or hurriedly left the country before they could be declared persona non grata after being implicated in espionage activities.

They were:

* Yevgeniy Nikolayevich Barmyantsev, 39, a lieutenant colonel in the Soviet army and a GRU officer, was at the time the highest-ranking Soviet military attache in Washington. Barmyantsev was expelled in April after he was apprehended while removing eight rolls of undeveloped 35 mm film from a plastic bag at the base of a tree in rural Montgomery County. The film contained photos of classified U.S. documents, according to the FBI.

* Aleksander Nikolayevich Mikheyev, 44, was expelled in April after he tried to obtain classified information from an aide to Rep. Olympia J. Snowe (R-Maine). Mikheyev, reportedly attached to the USA and Canada Institute in Moscow, was on a three-month tour at the Soviet mission to the United Nations.

* Oleg Vadimovich Konstantinov, 33, an intelligence officer attached to the Soviet mission at the U.N. He was arrested in Manhasset, N.Y., in April when he met with an American from whom he was trying to get secret information about U.S. weapons technology and the U.S. aerospace industry.

* Vasiliy I. Chitov, an army major general and chief military attache, was expelled in 1982. He led the FBI in a high-speed car chase in Northern Virginia after they caught him picking up secret documents that they had laid out for him in a trap.

* Yuriy P. Leonov, assistant air attache at the embassy, left the U.S. in September 1981 after he visited the office of Rep. David F. Emery (R-Maine) and asked for a copy of an alternative MX missile plan that had been submitted to top administration officials.

Yuriy Marakhovskiy, a second secretary at the Soviet Embassy, was expelled in November 1981 for trying to obtain classified documents.

* Vladimir V. Popov, a third secretary at the embassy, left the country in 1980 after he was identified as the contact for former CIA officer David H. Barnett, convicted of passing secrets to the KGB.

Alexander Kukhar, a second secretary at embassy, was expelled in 1979 for being "too aggressive" in his contacts with Americans, according to the FBI.

* Vladimir P. Zinyakin, an attache at the United Nations; Valdik A. Enger, an assistant to the U.N. secretary general, and Rudolf Chernyayav, a personnel officer at the U.N., were taken into custody in a Woodbridge, N.J., shopping center in 1978 after paying $16,000 to a U.S. Navy officer (who was cooperating with the FBI) for secret Navy antisubmarine warfare documents. Enger and Chernyayev, who did not have diplomatic immunity, were convicted of espionage and sentenced to 50 years in prison. They were exchanged for some human rights activists released by the Soviet Union in April 1979.