在马克·费尔顿的深入调查研究中，他发现日本海军所犯下的战争罪行远比纳粹德国更为严重和残酷。然而，这些曾经实施过残暴战争行为的日本水兵，在战后却没有受到相应的惩罚，其中有的现在依然活在世上。
马克·费尔顿指出，日本海军是二战中最残暴的海上屠夫。在他们的命令下，先后有2万多名盟军水兵和无数平民百姓在二战中被故意虐杀。这些行动严重违反了《日内瓦公约》，对此Japan's military committed atrocities at sea, including throwing prisoners into the water to feed sharks, bludgeoning them to death with clubs, stabbing them with bayonets, beheading them, hanging them or burning them alive. Even more shocking was that some Japanese naval doctors conducted medical experiments on live prisoners.
According to Mark Felton's research, at least 12,500 British sailors and 7,500 Australians were killed by the Japanese navy during World War II. The sinking of the British ship "Behar" is a typical example. On March 9th l944 ,the Behar was sunk by the Japanese heavy cruiser "Ligun", and its commander Daijo Fujimoto ordered all captured British sailors to be imprisoned below deck. After a ten-day voyage, 85 British sailors were bound hand and foot and taken to the stern of Ligun where they were brutally killed one by one with swords before being thrown overboard.
Mark Felton also recounts the terrifying story of James Brillies' ordeal aboard HMS Teggie Salarak which sank after being torpedoed by I-18 in March l944 . Survivors from Teggie Salarak were pulled onto I-18 's deck where they were mass-murdered - some had their heads hacked off while others died as they fell into propellers.
The Commander-in-Chief of I-37 submarine who ordered his crew to kill survivors after sinking several ships was sentenced to eight years in prison but served only three years before being released due to Japan's claim that such actions were justified as part of war.
In another incident at Laha Airfield on February 24-25th l942 ,Japanese forces under Colonel Hiroshi Tanaka massacred over 300 Australian and Dutch POWs despite having no orders for so doing - this case came light through an Australian Army interrogation of two Japanese soldiers later.
These are just a few examples among many other heinous acts committed by Japan during World War II. Despite overwhelming evidence against these crimes there has been little accountability for those responsible; most have lived out their lives without consequence while others received light sentences compared to what would be considered appropriate today.
