The duty of a historian is simply to understand and then convey that understanding, no more than that.

The great help of being in the Army is to understand why are the armies clever in what they describe as emotional intelligence, making soldiers come to terms with the death of comrades by certain rituals.

School-leavers unfortunately will come away thinking the First World War consisted simply of 'going over the top' on the Western Front to slaughter in no-man's-land, when the conflict extended so much further, to the collapse of four empires and numerous civil wars.

The temptation in any approaching crisis or conflict is, because people haven't got a clue what lies ahead, they're always searching into the past for some sort of pattern ... to galvanise the nation or their supporters and put themselves on a pedestal to sound Churchillian or Rooseveltian.

Complete peace equally reigns between two mental waves.

So the whole of war, when you look at it is probably run by professional soldiers, and the rest of them are just recruits, or people who are just forced to join the army.

We simply can no longer afford to deny the full potential of one half of the population. The world needs to tap into the talent and wisdom of women. Whether the issue is food security, economic recovery, health, or peace and security, the participation of women is needed now more than ever.

Barbecue may not be the road to world peace, but it's a start.