The results of the battle led to further discussion in the US Pacific Fleet about changes in tactical doctrine and the need for technical improvements, such as flashless powder. It was not until eight months later that the naval high command recognized there were serious problems with the functioning of the torpedoes. The Americans were still unaware of the range and power of Japanese torpedoes and the effectiveness of Japanese night battle tactics. In fact, Wright claimed that his ships must have been fired on by submarines since the observed position of Tanaka's ships "make it improbable that torpedoes with speed-distance characteristics similar to our own" could have caused such damage, though Tanaka states that his torpedoes were fired at a range as short as three miles. The Americans did not recognize the true capabilities of their Pacific adversary's torpedoes (particularly the surface-ship-fired Type 93 "Long Lance") and night tactics until well into 1943. After the war, Tanaka said of his victory at Tassafaronga, "I have heard that US naval experts praised my command in that action. I am not deserving of such honors. It was the superb proficiency and devotion of the men who served me that produced the tactical victory for us."