Did they? I am no WWII expert but I do recall something about the British military in late 1930's having the bulk of their power understandably concentrated in their navy. The Germans really never bothered too much with building a strong navy, preferring to rely on their large and well-equipped armies.
Yes, but the German Army was elsewhere - in Poland. The Germany Air Force was also superior to the RAF, but it was likewise elsewhere.
I don't think the British could do anything on land to defend Poland even if they had wanted to pursue that strategy.
What they wanted to do is the crux of my question. I think I'm not making my question clear. I am aware of what they did; what I want to know is why. Why make the agreement, knowing they would abrogate it? Why did they abrogate it? What you're saying is that they did what they did because they did it. I think there was a reason - I'd like to know what that reason was.
What about the French? Dunno. They couldn't have been that strong either if the Nazis defeated them so easily either.
Actually, that's quite untrue. France had a very powerful army at that time, and Germany feared it. France greatly outnumbered the Germans who were stationed on the Siegfried Line; most of Germany's power was in Poland on the other side of Germany at the time. France declared war and invaded Germany in the Saar. They won in a walk - Germany was being routed! Yet France called a halt to the invasion, sat still for a few weeks doing nothing, and then fell back, giving the Saar back to Germany for no apparent reason. It was also known as 'The Phoney War' because not only did France halt it's successful offensive, it began feeding completely made-up reports of French victories against German troops to Poland, who was sitting waiting for the planned relief of their embattled forces by both France and Great Britain.
What's going on here?
Maybe there's really no big story behind it at all other than what everyone has mentioned already.
I don't think so. Nobody is really saying anything other than Great Britain wasn't really prepared to take on Germany when it invaded Poland. I can dig that - but that's not what I asked. WHY did Great Britain make that promise to Poland, knowing it would not honor it? What was their purpose of entering the war by declaring war on Germany and then not attacking as they agreed to? Why Poland and not Czechoslovakia? And let's add more to this - why did Great Britain not declare war on the USSR when it also invaded Poland weeks after Germany did (USSR was then an ally of German, not the Allies).
The whole thing is strange, and I am not understanding the explanations - GB did what it did because that's what it did. That's a recounting, not an explanation.