Centre-back Kettle, 31, previously played for Solihull Moors and Tamworth and spent last season at Bromsgrove Sporting.
Midfielder Gittings, meanwhile, made more than 150 appearances for Kidderminster in the National League before moving to Solihull and most recently Leamington, for whom he played against Stour in last month’s Birmingham Senior Cup final.
The 36-year-old said he had been attracted to the War Memorial by the ambition of managerial duo Leon Broadhurst and Stuart Pierpoint.
He said: “They are young, up-and-coming managers and I want to help them progress.”
Rushall Olympic have beaten several rival clubs to the signing of attacking midfielder Will Shorrock.
The 23-year-old is a product of Walsall’s academy and spent last season at Bromsgrove Sporting.
Pics boss Liam McDonald has also convinced Owen Parry, Tom Thorley and skipper Richard Batchelor to remain at Dales Lane.
“I am delighted to have won the race to sign Will,” said McDonald. “He really stood out against us last season and is someone that we were very keen to bring in.”
Sporting Khalsa have snared former Chasetown winger Harry Cunningham as their summer business continues, while Halesowen Town have made two additions to their midfield with the acquisitions of Tom Turton and Josh Quaynor.
Turton spent last season with Alvechurch while Quaynor impressed in the division above with Bromsgrove.
‘’Josh has been top drawer for his previous club for a number of years.’’ said Yeltz boss Paul Smith. ‘’He was a standout performer last season at step three. It’s another fantastic new signing for the club, and I’m very happy with how the squad is shaping up.’’