A drive to force tighter unification of the armed services got under way yesterday among Senators looking for some way to cut the house-approved $16,000,000,000 military appropriation. Senator Harry Byrd (D-Va.) told a reporter he hopes to see a new unification bill shoved through the Senate before that body is called to pass on military appropriations.

The Korean Republic disclosed today it is negotiating with the United States to set a date "in the course of several months" for withdrawal of American troops.

The 1949 big league baseball season opens today with games scheduled in Boston and Washington; tomorrow the rest of the clubs swing into action. At Braves Field this afternoon Johnny Sain will pitch against the Philadelphia Phil's Ken Heintzelman, while in Washington; the Philadelphia Athletics' Dick Fowler will face the Senators' Ray Scarborough.

Results of the final day of exhibition baseball: Boston (A) 4, Boston (N) 3; Brooklyn 9, New York (A) 3; New York (N) 8, Cloveland 3; Detroit 4, Pittsburgh 3; Philadelphia (A) 5, Philadelphia (N) 2; St. Louis (N) 7, St. Louis (A) 4.

A new drug that hits at the heart of cancers in mice, stopping their growth, was reported to cancer researchers in Detroit yesterday.