The Yellow Robed Fiend

(from the Phillipine war diary of Lt. Guy Linley, United States Army)
August 7, 1899. Cotabato Valley, Phillipines:
They came over the eastern wall last night, led by a wild eyed devil in ragged yellow robes. The bastard was ferocious as a mad dog and some of the boys gave way and ran from him. I came within pistol range as he was dismembering a private from ohio with his great curved knife, I fired 2 rounds into his upper back and as he turned from his grisly work to face me I fired 2 more; one of which tore apart his lower jaw and another into the neck which ruptured the large artery. He stared at me for a moment, his face horribly disfigured and the lifeblood gushing from the neck wound, then he fled back to the jungle, scrambling over the 7 foot foot wall in a blur of yellow robes and splattering blood. That broke the attack but the crazed chanting continued throughout the night.
August 11:
 Another attack last night, they did not make the walls this time but I spotted the yellow robed man again near the tree line. He had wrapped his lower face in a yellow scarf but by his bearing I know it was the same man, he did not take his eyes from me during the entire episode. I ordered corporal Williams to sniper him but yellow robe faded into the jungle before Williams could get a bead on him.
Something is not right here, how he survived the 4 rounds I put into him is beyond imagining. The 38 long colt is a much maligned cartridge but it will surely kill, and this man should be dead considering the amount of his blood still staining the eastern wall.
August 17:
 Severed head of Williams found near main gate this morning, eye sockets and mouth stuffed with yellow rags. How Williams was killed outside the walls of the camp is impossible to guess. He must have left willingly, there is no way he could have been taken by force unless we have traitors among the phillipine scouts.
 August 18:
Talked with some of the boys who were close to Williams, they told me he had been sleepwalking and was found standing at the wall the last 2 nights before his murder. He proved very hard to wake and mumbled that the yellow robed man was whispering to him from from the jungle.
August 19:
 Some bastard left a yellow rag in my coffee cup this morning, I almost swallowed it. When I find the fellow behind this prank a few days locked in the tool shed should convince him this is no joking matter.
August 21:
 Dreamed of Yellow Robe whispering to me last night, couldn't understand the words but I know he wanted me to come into the jungle.
August 22:
 Sleepwalking last night, dreamed Yellow Robe was calling to me and I attempted to leave the camp. Vaguely remember fighting with Morris and 2 others when they tried to restrain me, finally came to myself when someone gave me a crack with a rifle butt. I will not end up like Williams, tonight I will handcuff myself to my cot and give the key to Morris.

(Note: Lt. Guy Linley disappeared the night of August 22, 1899. A trail of blood led from his quarters to the eastern wall of the encampment, he had apparently severed his thumb with a pen knife to free himself from handcuffs. Missing and presumed killed in action, Linley's thumb was shipped to his family and given a proper burial.)