Dell occupies a unique position. He is the only person in the world who has played Test cricket and fought in combat.

A tall, raw-boned left arm pace bowler, the English-born Dell was a promising prospect in the Queensland system after catching the eye as a student at the then Church of England Grammar School and playing Grade cricket.

He embarked on a period of National Service, and served in the Vietnam War as a National Serviceman in the 2nd Battalion, Royal Australian Regiment from 19 May 1967 until 26 March 1968, fighting in a number of battles and skirmishes in the jungle near the Australian base at Nui Dat when the Tet offensive was unleashed by the North Vietnamese army and Viet Cong.

His cricket career reached its highest points after he returned home to swap jungle greens for whites, playing two Tests for Australia in an impactful 41-match career that saw him take 137 first class wickets for Queensland and Australia in the early 1970s.

But in the background was a battle he did not know he was fighting.

“Phyiscally I came back fine but I went 40 years without knowing what the cause was before I was finally diagnosed (with PTSD) in 2008,'' he told Ian Healy and Mark Braybrook this morning on SEN Track in Queensland on 1053AM Brisbane, with the interview coinciding with the 55th anniversary of the Battle of Long Tan in Vietnam.

His recovery included the creation of Stand Tall For PTS, (www.standtall4pts.org) to provide support for people with PTSD.

His book, written by Greg Milam, will be launched at the Queensland Cricketers' Club on Friday 3 September with tickets on sale now, with all proceeds going to benefit those recovering from mental trauma and PTSD.

Tickets can be booked at qcclub.com.au

Dell will be supported in the launch by Queensland and Australian teammate Greg Chappell, as well as former Test captain Ian Chappell, former Defence Force Chief Sir Angus Houston and Governor-General David Hurley. 

"I'm grateful to my teamates - Ian Chappell once told me that he was my captain for life and Greg of course has been very generous - as has Sir Angus Houston and the Governor-General with supporting me and this cause,'' he said.

Dell concedes his memories of his cricket career are clouded, despite appearing in one of the most controversial matches held in Australia, the 1970-71 Seventh Ashes Test at the SCG.

He starred in his Test debut against England, one of four players to make their first appearance in the baggy green in the Seventh Test, and impressed wih the ball in taking five wickets.

However, the match was overshadowed by a controversial decision by England captain Ray Illingworth to remove his team from the field of play after fast-bowler John Snow clashed with a spectator following the felling of Australian tail ender Terry Jenner from a Snow bouncer.

Dell also played against New Zealand the following year, but his career came to an unexpected end after the 1974-75 season when a shoulder injury forced him to retire.