SEOUL (AFP) - North Korea will view any interception by Japan of its satellite launch as an aggressive act and respond with its most powerful military means, the communist states news agency said Tuesday. If Japan dares to shoot down the satellite, the Korean Central News Agency said, our military will consider it as gunfire from the war criminal Japan that signals a re-invasion 60 years after World War II. The North Korean military will mercilessly crush all interceptors... with our most powerful military means, it added. The North has said it will launch a communications satellite some time between April 4-8. The United States, South Korea and Japan say the launch is a cover for a long-range ballistic missile test. North Korea has warned that the first booster rocket would likely plunge into the Sea of Japan (East Sea) off Japans northern Akita prefecture, while the second stage would drop into the Pacific between Japan and Hawaii. On Tuesday Japanese lawmakers passed a resolution denouncing the planned launch as a threat to peace in Northeast Asia. Meanwhile, North Korea has put all regular and reserve forces on combat alert ahead of its rocket launch, a South Korean aid group said Tuesday. The communist country has confined all regular soldiers to barracks as well as alerting reserve forces, said the Good Friends group, which has contacts in the North . Our latest information from NKorea showed all male adults on standby as tensions run high over its satellite launch, group official Lee Seung-Yong told AFP. He said all men were barred from travelling far from their homes. The country is now on semi-war status, Lee said, adding North Korea appears to be concerned about possible sanctions following the launch set for some time between April 4 and 8. The group in its newsletter said Pyongyang has told ruling party members in cities and counties that it would not sit idle if its enemies hinder its satellite launch. The United States, South Korea and Japan say the launch is a pretext for a long-range missile test and they would refer it to the United Nations Security Council. Japan has said it will shoot down the rocket if it appears likely to fall on Japanese territory. South Koreas defence ministry refused to comment on the aid groups report. Along with its 1.2 million-member regular armed forces, North Korea maintains 7.7 million reserve troops, or about 30 percent of its population, according to South Korean military data.