WASHINGTON — Construction companies are lobbying the government to spare their projects from across-the-board cuts. Drug companies are pleading with the White House to use all the fees they pay to speed the approval of new medicines.

And supporters of Israel have begun a campaign to make sure the Jewish state receives the full amount of military assistance promised by the United States.

A frenzy of lobbying has been touched off by President Obama’s order to slice spending this year by $85 billion, divided equally between military and civilian programs. The cuts have created new alliances and strange bedfellows.

Hunter R. Rawlings III, a historian of ancient Greece who is the president of the Association of American Universities, joined Wesley G. Bush, the chief executive of Northrop Grumman, the maker of surveillance drones and B-2 bombers, in a news conference in which they denounced the automatic cuts known as sequestration.