Abe's speech -- which came after nearly 100 lawmakers including two cabinet ministers visited a controversial war shrine -- avoided typical words such as "profound remorse" and "sincere mourning" to atone for those who suffered as Tokyo's Imperial army stormed across East Asia.
The omission was sure to anger China and South Korea, which have bristled at Abe's talk about overhauling Japan's pacifist constitution, while visits to the Yasukuni shrine enrage neighbours who see its as a symbol of Tokyo's imperialist past.
"I will never forget the fact that the peace and prosperity we are enjoying now was built based on the sacrifice of your precious lives," Abe said in a reference to the 2.5 million war dead honoured at the shrine.
Yasukuni enshrines citizens who died in World War II and other conflicts, including 14 top convicted war criminals such as General Hideki Tojo, who authorised the attack on Pearl Harbor which drew the United States into the war.
Japan surrendered on August 15, 1945 after the United States dropped atomic bombs on the cities of Hiroshima and Nagasaki.
Abe, who was expected to stay away from the shrine today but who reportedly sent a ritual offering via an aide, added in his speech that Japan would do its "utmost" to ensure "permanent world peace".
Security was tight with hundreds of police surrounding the leafy shrine in the heart of Tokyo, as right-wing nationalists carried flags calling on visitors to pray for Japan's "heroic war dead".
"It was my personal decision to come here," Shindo told reporters, adding it was a "private" matter that should not affect Japan's diplomatic relations.
Another cabinet member, Keiji Furuya, also made the trip.
"Consoling the souls of war dead is a purely a domestic issue," Furuya told reporters.
