Poland, in it's 21st year of independence regained after 123 years has yet again to face it's aggressors. September 1st 1939 armed forces of Germany and Slovakia, followed by Soviet Union on September 17th attack Poland - all without any war declaration, breaking the non-aggression pacts and international laws.
Rollin' Oldschool Style... First 'modern' tank in the world by 1939 obsolete and reassigned to basic cadet training - yet it had to play it's part in the defense, as every asset seemed worthy using at the time