In 1918, three years after Pinkus' death, his brother had a child who he named Sidney Percival Singer in his late brother's honour.

Rifleman Percy Pinkus Singer of the 2nd Batt. Rifle Brigade, whose death in action took place in France on the 25th of September at the age of 19, was one of the first to answer the country’s call on the outbreak of hostilities. Pinkus was not the only one of his family serving his country. The sad news of his death in fact reached his prents in a letter from another son, Rifleman Judah Singer, serving in the same regiment. Judah’s letter was dated France 26th September and was addressed to another brother Harry. Harry, however, had prior to the receipt of this comunication joined the Army Gymnastic Staff.

In the course of the letter above referred to from Rifleman Judah Singer, he writes “… Our dear brother Percy was killed in action yesterday. We advanced on the war front and took three lines of trenches … it was while doing so that Percy was killed. I did not know this till the morning. I had to take the men’s packs up this morning. You can imagine the shock I had when I was told of his death by a man who stood by his side when he was hit. I brought his pack away with me. I have it now. He could not have been brought back into our lines. It was between the German’s third and success lines of trenches where he was hit. I have just been handed the parcel you sent for Percy. Hew as the only comfort I had out here. How I used to look forward to seeing him when out of the trenches.”

In a further letter, Rifleman Judah Singer writes: “The men have praised him. He proved himself a brave lad. He volunteered to go as swordsman, as we lost most of our bombers. I saw him a day previous to going into action. He was very cheerful and seemed confident of getting through alright.”

So far as can be ascertained at present, the last letter Rifleman Pinkus wrote is dated 23rd September, also addressed to his brother Harry, in which the deceased Rifleman wrote in connection with Yom Kippur services: “I wrote to Mr Adler inquiring for the name of the nearest place to us where Jews reside or where services were being held. His reply did not reach me till Erev Yom Kippur. It consisted of an invitation to Judah Figgins (The only other Jew besides ourselves) and myself to attend morning service on the 18th at a place called ----. We three were given permission to be absent from our quarters for the twenty-four hours. We did not, however, find out where this place mentioned is till late on the 18th. Having no means of conveyance we could not attend for this place is at least fifteen miles from here. Even had we been able, we would not have ridden Yom Tov. We therefore stayed at Judah’s place.”

On hearing the death of Pte Lionel Goldston (son of the Rev. N. Goldston), Rifleman Pinkus Singer wrote to Mr. Goldston a letter of condolence in which he mentioned that, of course, he could not tell but that his own end might come at any moment, but when that end did come he hoped to be able to say, “I am ready, Sir,” a very pathetic expression for a boy of nineteen, especially in light of after events.