121991
During the rest of the First World War , Crawshay-Williams saw active service in the 1st Leicestershire Royal Horse Artillery in Egypt and Palestine from 1915-17 .
 Crawshay-Williams, Artillery
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Crawshay-Williams, Artillery