Polish dictator agreed with Hitler intervention in Spain in the name of anti-communism. A reason you can fully agree with if I follow well your interventions in this forum.
Sorry but here I completely don't understand you. Really.
I don't know who could be that dictator (I assume you mean spanish civil war 1936-1939).
Please - give me lux perpetua and let me understand. I don't think you mean Pilsudski. You mean?

To reply battle mentioned by you... interesting.
Battle of Wizna - 7-10 september 1939.
720 polish soldiers, 6 cannons, 42 machineguns, 2 anti tank guns vs 42000 Germans, 350 tanks, 637 cannons, luftwaffe support lead by Guderian. His corps was stopped for 3 days.
This is unbalanced condition. And this is fighting spirit.