May 3 - The new post-war Japanese constitution goes into effect.

Japan's post-war constitution separates religion and state in article 20:

The military in Japan is affected by Japan's pacifist post-war constitution.

It acquired its present name under the post-war Constitution of Japan in 1952 .

The post-war constitution of Germany strictly forbids the use of military force in police functions.

Culture Day was first held in 1948, to commemorate the announcement of the post-war Japanese constitution on November 3, 1946.

Military taxonomy in Japan is circumscribed by Japan's pacifist post-war constitution.

In 2004, Ōe lent his name and support to those opposing proposed changes in the post-war Japanese constitution of 1947.

Filed by the Democratic Party of Japan and two other parties, it was the first censure motion against a prime minister under Japan's post-war constitution.

He was aided, experts say, by Japan's post-war Constitution, which renounced warships and allowed any Japanese military forces to engage only in self-defense.