By actually having it in a credit card so nobody except you will know the number to so nobody hacks it or it can be in your bank and nobody will get your savings
I'm going out on a limb here and figuring that you're talking about a specific poster that rings a bell. Basically, it portrays the Germans as evil people, and inspires young British men to enlist in the army to fight them.
That's a D from me, to culminate would be to grow, build, culminate
