King Algar went straight to the battlefront once the first signs of the defense of the Elven Empire breaking started showing. Unlike his wife who was a master mystic mechanic, he was a warrior, all he knew was war.
The Kamaitachis attacked the Elven castle from all sides, stretching their defense that was trained and honed for centuries thin.
King Kama Itachi of the Kamaitachis did not join the war immediately which was why the Elven King choosed a random direction to support his fighting soldiers.
The King quickly got overwhelmed in the chaos of the raging war as he lost all perception of the big picture, only focusing on his immediate surroundings.
The Elves may not have the strength and savagery of the Kamaitachis but what they did had was coordination, their archers were highly coordinated.