In 1942, J. Clark, then aged 25 and an executive with his family's theater chain, left for armed forces as evidenced by this article in the Trenton Evening Times 16 Apr 1942. He was honored in a surprise reception by 50 of his associates including his mother, his cousin Charles F. Sweet who worked for the Hildinger enterprises for many years. Also, attending was David R. C. Johnston, Clark's uncle who was married to Mary Elizabeth Hildinger, sister to Clark's father Charles Hildinger. David worked for the Hildingers for many years as a theater manager first starting at the old Park theater which later became the Rialto and later as manager at the Strand. David Johnston was my husband's great-grandfather.
In March of 1943 J. Clark was promoted from private to corporal and headquartered at Fort Dix. Upon his return to Trenton after his service he again took up his position as an executive with the Hildinger Theater enterprises.