WAHN-HEIDE, WEST GERMANY, SEPT. 15 -- West German Chancellor Helmut Kohl announced tonight a $2 billion package of measures to support the multinational forces in the Persian Gulf and the nearby states hurt by the global economic embargo against Iraq.

But Kohl maintained that the German constitution bars an active military role on the ground of the kind that Great Britain, France, Italy and Canada have agreed to in recent days. Japan, which has similar constitutional constraints, has pledged $4 billion to the effort in the gulf.

In Paris, French President Francois Mitterrand announced today that he will send 4,000 ground troops backed by tanks and combat aircraft to Saudi Arabia and will seek to extend the U.N.-authorized sea and land blockade against Iraq to cover air traffic. {Details, Page A33}

Kohl, flanked by Secretary of State James A. Baker III outside his hometown residence here, acknowledged that other nations were putting soldiers on the line in the Saudi Arabian deployments to protect oil flows to Germany and Europe. "They are . . . acting on our behalf, and they are also defending our interests," he said. "Let me say very frankly that I am dismayed we are not completely free to act in the community of nations in a way we would like to act."

"We are tops in the field of exports," Kohl said, "but we are not fully assuming our responsibility" in the Persian Gulf. Kohl pledged to seek a constitutional amendment, after all-German elections in December, that would relax the post-World War II restrictions on offensive German military activity abroad.

Baker tonight completed a 10-day, nine-nation tour that elicited more than $16 billion in economic and military aid pledges -- $12 billion of the total from Arab states and the rest from European allies.

"Being more means doing more," Baker said, referring to the coming formal merger of the two Germanys. "No one could draw any conclusion but that Germany is doing more."

Baker said the proposals "go beyond" what German officials had suggested in private discussions and "substantially so."

Referring to criticism in the U.S. Congress that Germany is not carrying its share of the burden in the gulf, Foreign Minister Hans-Dietrich Genscher, who met with Baker separately today, told reporters, "I am convinced that . . . these political voices will be silenced" by the German announcement.

The German package will be split roughly equally between transportation and financial aid to the United States for Operation Desert Shield and money to aid Egypt, Jordan and Turkey, which have suffered economic losses as a result of the United Nations sanctions against Iraq.

The package will be supplemented with a previously announced $270 million German allotment to the European Community effort for those three states.

According to Kohl, the new proposal includes vehicles, radio and engineering equipment, cranes, generators, water tanks and equipment to help resist chemical and biological warfare.

Some of the money will go toward chartering commercial aircraft and merchant vessels to transport U.S. troops and equipment to the gulf, West German government sources said. Air and sea transport has been one of the major bottlenecks in Operation Desert Shield; some nations such as Syria and Egypt have pledged to send troops to protect Saudi Arabia but lack the means to get them there.

Baker said tonight that the United States has asked the Soviet Union to help transport Syrian troops; the Soviets have not yet responded.

Among the affected states, Egypt would get the largest allotment of Germany's aid, including commodities and economic development aid valued at about $650 million. Jordan would receive a direct cash contribution of about $130 million.

Kohl also promised "substantial" aid and defense materiel for Turkey, where German troops have greater flexibility because Turkey is a member of the North Atlantic Treaty Organization.

In response to concerns raised by West Germany's early release from jail of an Iraqi convicted of illegal arms sales to Baghdad three weeks ago, Kohl said his government is abiding by the arms embargo against Saddam's government, and "deeply regrets" that some German companies have been providing military technology to Iraq. Government sources have said the man's release, halfway through his term, was a normal procedure for a model prisoner, but critics have said it was inappropriate during the current crisis.

Baker was asked tonight about criticism that the U.S. ambassador to Baghdad, April Glaspie, had given Saddam an indication just before the invasion that the United States would not object. Baker called this criticism "ludicrous" and praised the ambassador as a "dedicated public servant."

Baker cited actions that the United States took before the invasion to show its displeasure with Saddam's behavior, including halting the export of sensitive technology, but he said he would not comment "on the substance of diplomatic correspondence," referring to minutes, made public by Iraq, of Glaspie's meeting with Saddam on July 25.

Summing up his tour tonight before returning to Washington, Baker said "there is no time frame" for the current diplomatic efforts to resolve the confrontation with Saddam but that he feels "events are moving in the right direction."