I think they are engaged in a front battle because:
- national democracy is at stake
- equality within and between nations is at stake
- national economic policy is at stake
- the future of Europe (euro) is at stake
- the future of the world is at stake.
Are these too big words for a small battle?
I think Greece and its creditors are, at the same time, waging a rear battle because:
- neoliberal capitalism is nearing its end
- the role of money/finance will decrease
- the relationship between creditors and debtors will change
- debt reduction is inevitable
- the legitimacy (power) of European authorities will decrease.