But the study by Rusi found that the UK armed forces lack critical firepower compared to Russia’s military.
It analysed military capabilities in the “unlikely” context of “a high-intensity conflict between Nato and Russia, in which the UK has promised to deliver a warfighting division”.
“At present, there is a risk that the UK – unable to credibly fight – can be dominated lower down the escalation ladder by powers threatening escalation,” the report said.
It said Britain is “comprehensively outgunned and outranged”, leaving enemy artillery free to defeat UK units.
Russian artillery and rocket batteries have already proved to be potent, destroying two Ukrainian battalions in 2014 within minutes.
UK and other Nato forces not only have a limited number of artillery pieces, but also a shortage of munitions stockpiles and transportation.
The report said the “rejuvenation and modernisation” of Britain’s ground-based artillery is an “urgent and critical priority”.
In response, the MoD said: “The UK does not stand alone but alongside its Nato Allies, who work closely together across air, sea, land, nuclear and cyber to deter threats and respond to crises.”
It added: “As the largest Nato defence spender in Europe, the UK’s armed forces are well equipped to take a leading role in countering threats and ensuring the safety and security of British people at home and abroad.”
The statement comes less than three weeks after French President Emmanuel Macron described Nato as “brain dead” – stressing what he sees as waning commitment to the transatlantic alliance by its main guarantor, the US.