Lt.Col. Cate McGregor AM has been a participant in some of the most significant chapters in recent Australian history.

She has been a political strategist for both the ALP and the Liberal Party.

In her current role as a senior Army officer, she wrote last year's landmark speech by the Chief of the Army David Morrison which went viral around the world.

Now, she is the most high profile individual in Australia to 'come out' as a transgendered person.

When, after decades of private struggle, Malcolm finally decided to become Cate she was 'terrified' about the likely reaction from friends and colleagues.

Prime Minister Abbott, Army Chief David Morrison, Liberal pollster Mark Textor and political journalist Barrie Cassidy are among a range of high profile individuals who speak candidly about Cate's transformation and its impact on them.