I’m really thrilled to have been awarded the Harry Gration History Prize by the The Yorkshire Society for my work on the royal jousts in York in 1400 ⚔️ thank you very much to the Society! Second photo shows me on the site of the jousts, now in Deans Park behind the Minster.

Was Napoleon short? It's the question you've all been asking, and the results are now in. Based on a survey of around 20,000 soldiers' records from 1815, Napoleon was... About 5cm (2in) TALLER than the average infantryman, and average height for a Grenadier in a line regiment!

You can now read my award-winning article on Henry IV's York duels in 1400 *FOR FREE*! ⚔️ 'Duelling the Crown: Henry IV and York's Courtly Duels in 1400' ⚔️ Enjoy 😄 theyorkshiresociety.org/dualling-the-c… via The Yorkshire Society

#OnThisDay 1485: the Battle of Bosworth. The army of Henry Tudor, soon to become Henry VII, lines up against Richard III’s larger army in battle order. Waiting near Dadlington are Thomas and William Stanley and their additional forces, unwilling to commit to either side. 1/6

For more information visit our Battlefields Hub: battlefieldstrust.com/resource-centr…

As we approach the one-year anniversary of its publication, our book 'Battle' - which explores how battles are fought, won and lost - now has 30% off on the Pen & Sword Books website! Get it (and other great books at a discount) here: pen-and-sword.co.uk/Battle-Hardbac…

#OnThisDay in 1066 the army of King Harald Hardrada of Norway and Tostig Godwinson defeated an English force led by earls Edwin of Mercia and Morcar of Northumbria at the battle of Fulford near York. 1/9

Public service announcement: if you're looking for the perfect Christmas gift for the military history lover in your life (or just yourself!), there's currently a great discount on this book at Pen & Sword Books ! 📚🎅🎁 pen-and-sword.co.uk/Battle-Hardbac…

Brilliant time had by all at the Battlefields Trust annual Conference at York St John University this weekend. Superb keynotes by Dr Rachael Whitbread 🖋️ on the York jousts of 1400, Michael Wood on locating the Battle of Brunanburh, and David Cooke on Marston Moor!

A fascinating afternoon near York for anyone interested!

Stunning #northernlights #Auroraborealis display this evening. These taken in North Yorkshire.

This looks to be an excellent book - I was lucky enough to accompany Dr Graeme Callister on a research trip and can attest that it’s a fascinating read! #historybook #waterloo

18 June 1815. Near Waterloo, Belgium. As day breaks, the torrential rainstorm of the previous night eases, then stops entirely. In a small shallow valley, a dozen miles south of Brussels, tens of thousands of men wake from a restless night. Today there will be a battle. 1/

Please excuse the purely self-indulgent post, but I'm really happy to see that 'Waterloo: the Attack of I Corps' has gone to #1 bestseller on the Pen & Sword Books website! It's made my week! 😁 Many thanks to everyone who pre-ordered - so pleased people find the topic interesting!

Book released today! Fantastic to see it finally out there! Pen & Sword Books have done a great job of putting it together! Copies available direct from Pen & Sword (link below)

pen-and-sword.co.uk/Waterloo-The-A…

Incredible #northernlights last night! These from our garden near Easingwold 😄 #yorkshire Christa Ackroyd

FREE event next Tuesday 11 March, in York YSJ Events and online, 6pm. The brilliant Dr Zack White will be giving a talk on Britain's East India Company army - a major but misunderstood part of Britain's Napoleonic story. All are welcome! Full details in reply below.

The Yorkshire region of the Battlefields Trust Battlefields Trust is at North York Moors NP visitors’ centre, Sutton Bank today, for the Battle of Byland anniversary event. Do come and say ‘hi’ if you’re there!

Half a millennium outside my usual period, but I’ll be at Sutton Bank today with the Battlefields Trust to commemorate the Battle of Byland (1322)! Come along to say hello if you’re in the area! Battlefields Trust North York Moors NP