\documentclass[12pt]{scrartcl}
\usepackage[MA]{spioncamp}
\def\version{3 -- \today}
\begin{document}
\title{Schablonen}
\subtitle{Transposition}

\vspace*{0.1cm}
\subsection*{Texte zum Entschlüsseln}
\vspace*{1cm}
\begin{tabular}{c|c}
\includegraphics[scale=1]{./abbildungen/schablone-text1} & \includegraphics[scale=1]{./abbildungen/schablone-text2} \\ \hline
\multicolumn{2}{c}{\includegraphics[scale=1]{./abbildungen/schablone-text3}} \\
\end{tabular}

\end{document}