None whatever voted against the war in Kosovo, admittedly a symbolic vote.
Although Jeremy Corbyn, John McDonnell and George Galloway all supported Tony Benn and Tam Dalyell in doing so.
In fact, every MP who voted against the Government on that occasion was at that moment a member of the Labour Party, although at least two of them no longer are.
Both of those are still alive, and one of them is on course to re-enter the House of Commons next month.
There was no vote of any kind on Afghanistan, but 139 Labour MPs voted against the Iraq War, whereas only 16 Conservatives did so.
A former Foreign Secretary was among the anti-war MPs to resign from the Government front bench. There were no resignations from the Opposition front bench.
The Conservative-supporting press spent several subsequent years literally accusing opponents and critics of the Iraq War of treason, as well as of anti-Americanism and anti-Semitism.
It did so on a daily basis. For years.
Some of us still occasionally get that kind of abuse to this day. There are those who are still subjected to it on a very regular basis.
One of the most outspoken of those voices belonged to a man who has since served as Education Secretary, as Chief Whip and as Lord Chancellor, and who remains a Conservative MP.
Such views are also held by, for example, the current Secretary of State for International Trade.
Now as then, he considers criticism of the American Administration, the Israeli Government or the Saudi Royal House to be treasonable in and against the United Kingdom.
That is mainstream thinking on the British Right.
Indeed, it is pretty much definitive of the British Right, including the Blairite Right of the Labour Party as well as almost all Conservatives.
Anything else, harking back to a Toryism of old, is altogether eccentric, and it is as rare as hen's teeth in the Commons.
Thus, precisely one Conservative, as against 11 Labourites (again including Corbyn and McDonnell, as well as Barry Gardiner), voted against the war in Libya, which has turned out to have been the most catastrophic of the lot, at least so far.
Thus, only 30 Conservatives joined the whole of the Labour Party in voting against war in Syria in 2013.
And thus, when, for all the hype, fewer than one third of Labour MPs voted to bomb Syria in 2015, a mere seven Conservatives voted against doing so.
Would there even be that many this time?
As soon as Parliament returns after Easter, then there needs to be a Commons motion, with a division, condemning the Government's support for the American bombing of Syria.